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ihavemathquestions

  • 2 years ago

Solve the system by graphing.

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  1. ihavemathquestions
    • 2 years ago
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  2. surdawi
    • 2 years ago
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    solve both equations for y then i will help

  3. ihavemathquestions
    • 2 years ago
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    ok one minute

  4. ihavemathquestions
    • 2 years ago
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    y = 2

  5. surdawi
    • 2 years ago
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    -3x - y = -10 4x - 4y = 8 ********************** (-3x - y = -10)*4=-12x - 4y = -40 4x - 4y = 8 ****************** -12x - 4y = -40 4x - 4y = 8 -----------------------subtract (-12x - 4x) + (-4y - -4y) = (-40 - 8) -16 x = -48 x = -48/-16 = 3 plug it in on of the equations and solve for y what do you get?

  6. ihavemathquestions
    • 2 years ago
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    uh....

  7. surdawi
    • 2 years ago
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    -3x - y = -10 plug in x = 3 what do you get?

  8. ihavemathquestions
    • 2 years ago
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    9-y=-10 10-y=9

  9. surdawi
    • 2 years ago
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    -3*3=?

  10. ihavemathquestions
    • 2 years ago
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    -9

  11. surdawi
    • 2 years ago
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    ok where did you get the 9 up there?

  12. ihavemathquestions
    • 2 years ago
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    idk ugh im going to cry

  13. surdawi
    • 2 years ago
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    then retry :p

  14. surdawi
    • 2 years ago
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    you can cry later

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